Machine for straightening shafting and the like.



Nov846,497. PATENTBD MAR. 12, 1907.

W J MUNGASTER.

MACHINE FOR STRAIGHTENING SHAFTING AND THE LIKE.

APPLIOATION FILED JAN. 4. 1906.

6 SHEETS-SHEET 1.

Y guwentoz:

llllllll IIHIIH Ill HIHI (Macy N0: 846,497. I PATENTBD MAR. 12, 1907.

. W. J. MUNGASTER.

MACHINE FOR STRAIGHTENING SHAFTING AND THE LIKE.

APPLICATION FILED JAN. 4, 1906.

6 SHEETS-SHEET 2.

No. 846,497. PATENTED MAR. 12, 1907.

W J MUNGASTBR.

MACHINE FOR STRAIGHTENING SHAFTING ANDOTHE LIKE, APPIJI ATION FILE 1906.

6 SHEETS-SHEET 3.

:No. 846,497. PATENTED MAR. 12, 1967.

W. I. MUNGASTBR.

MACHINE FOR STRAIGHTENING SHAFI'ING AND THE LIKE.

APPLICATION FILED JAN. 4, 1900;

6 sums-21mm 4.

937'" a o v N0. 846,497. PATENTED MAR. 12, 1907.

W. J. MUNGASTER.

MACHINE FOR STRAIGHTENING SHAFTING AND THE LIKE.

APPLICATION FILED JAN. 4, 190a.

6 SHEETS-SHEET 5.

aiwenfoz;

No. 846,497. PATENTED MAR. 12, 1907. w J MUNGASTBR.

MACHINE FOR STRAIGHTENING SHAFTING AND THE LIKE.

6 SHEETS-SHEET 6.

APPLICATION FILED-JAN. 4, 1906.

31 wenl'oz;

mm D srArRs TENT Ric.

WALTER J. MUNOASTER, or cUMBERLAND, MARYLAND, AssIGNoR rocUM- RERLAND STEEL coMPANY or ALLEGANY coUNTY, or CUMBERLAND, MARYLAND, A ooRPoRATroN or MARYLAND.

MACHINE FOB i STRAIGH'IIENING SHAFTING AND THE LIKE. i

Specification of Letters Patent.

Pater/ea March 12,1907.

Application filed Januarv 4, 1906. Serial No. 294,632.

To alfiwhom it mag/concern:

Be it known that I, WALTER J. MUNCAS- TER, a citizen ofthe United States, residing at Cumberland, in the county of Allegany and State of Maryland, have invented certain new and \lSGl'lll Improvements in Machines for Straightening Sh'afting and the Like, of which the following is aspecification.

My invention has reference to a machine for straightening shafting, rods, bars, tubing, and the like, and consists in various novel features, details, and combinations, hereinafter set forth with the aid of the accoiiipanying drawings," wherein Figure 1 is a front elevation of the nice.- chine with portions broken away or in sec-- tion; Fig. 2, avertical cross-section onthe line 2 2 of Fig. 1 looking toward the left;'

Fig. 3, a similar section on the',line 3 3 of Fig. 1 looking toward the right; Fig. 4 a partly-sectional elevation ofv the middle portion of the machine; Fig-"5, a perspective view designed to illustrate. the relative posi--- tions of the sliding j ournalboxes or bearings of the adjustable lower rolls and their connections; Fig. 6, a partially-sectional elevation of one set of the lower rolls, showing the wedge by which the intermediate roll is adjusted; Fig. 7, a perspective view of one of the roll-supports and ts base or turn-table; Fig. 8, a perspective view of the base of one of the intermediate roll-carriages; Fig. 9, a

perspective view of oneof the wedges used to raise the intermediate lower roll-bearings Fig. 10, a erspective view of aportion of the framewor; on whlch the roll-supports are I mounted and guided; Fig. 11, a partiallysectional elevation of the workingportion of a machine embodying"myjinvention in simpler but less erfect form; FigfilZ, a

cross-section on -t e line 12 12 of Fig. .11;

Fig. 13, a erspective view of one of therollers of sai simpler machine and its support or carrier; Fig. 14, a dia ammatic elevation of the rolls, sh'owmg t e oblique arrangement of their axes withreference to oneanother and to the common axis about which all are grouped.

My primary purpose is to true and straighten highly-finished shafting, tubing, and the like, and to do this it is essential that the mechanism act with'precision and elusive.

Referi-ing first to the more complete form of the machine, itsconstruction will nowjbe described.

in .Figs. 11 to 13, in-,

Fig. 1 gives a good idea of the general ap pearance of'the machine, which consists of a substantial bed or. frame A, carried on stools or pedestals B and having mounted in or upon it the several sets of rollers by which the straightening is performed, together with the gearing for rotating and the devices for adjusting the said rollers. The driving-gear comprises a main shaft 0, carried in boxes or bearings in. frame A and bearing at one end a belt-wheel D, through which to receive motion from anyconvenient prime motor, and at or near each end a pinion E, which meshes with and gives rotation to a large gear-wheel F. Each gear Fis keyed or otherwise made fast upon a tubular shaft G, and each shaft GJ is journaled or carried in bearings a a of ve'rv tical housings .H H, bolted or otherwise s'e'- cured upon frame A. Each shaft G is fur nished with a pinion b, which'meshes. withthree similar pinions c, d,-and e, carried by three shafts I, J, and K, journaled in bearings in the housings 'H H, as shown in Figs. 1 and 2. tion, through the pinions named, to the three shafts,.yet-being tubular in form permit the The tubular shafts G, serve to give moshafting or other body. operated upon to be passed longitudinally through them and through the" space between the three shafts 1 J K. Flach of the three shafts just mentioned gives rotary motion to one or another of three rollers L M N, which are grouped about the projected axis of tubular shaft G 4 in what may be termed spiral order or arrangement'that is to say, their axes are oblique to'each other and to the common axis -P Q, the ends of which connect with shafts I J K and with rolls L M N by means of universal joints f of suitable construction. As the rolls L M N are made longitudinally adjustable, the connecting rods or shafts P Q are made telescopic, as seen in Fig. 1, a crosspin, spline, feather, or other means being provided to prevent rotation of either section of the telescopic shaft independently of the other.

In the foregoing description I have indicated that both sets of rolls L M N are posi tively driven, and in practice such is the preferred arrangement, though I may in some cases drive one set only. It .will be seen by referring to Figs. 1 and 4 that the two lower rolls L and M of each group occupy like positions in the length of the machine, while the third roll N of each group is not directly over the rolls L M, but is set nearer the midlength of the machine. At a point between the proximate ends of the upper rolls N, but at the-same level as and in like position with rolls LM, is another pair of rolls R S. The various rolls are so spaced that the lower rolls L and M, R and S, L and M alternate in longitudinal order or arrangement with the upper rolls N N, or, in other words, rolls N N lie over the gaps or spaces between the lower roll pairs L M, R S, and L M. The lower rolls form a bed or support for the rod, shaft, or other body, and the rolls L M, together with the upper rolls N, serve to rotate and to advance such rod or shaft. If the shaft or rod be bent so that portions are eccentric to the longitudinal axis, such portions in passing beneath the rolls N will be pressed by said rolls downward or inward at a point immediately beneath rolls N, and consequently between the supporting-rollpairs L M and R S. Since the shaft travels from end to end be tween the rolls, every portion of its length'is acted upon and straightened.

An important feature of the work of this ,machine is that the pressure is radial to the axis of the shafting or 'body treated and without any dragging or rubbing action or tangential strain, suchas is produced by flier-rolls, with which are used special devices for pushing or pulling'the work longitudinally through or between the rolls. I It is necessary that provision be made for adjustment of the rolls toward and from the common axis about which they are grouped in order to adapt them accurately to the ob ject operated-upon, and it is desirable that this adjustmentfbe of such range as to perrnit the same machine tooperate on bodies of quite widely-varying diameter. Such adjustment may be effected by setting up'or' re-v ceding each roll separately, as hereinafter l more fully explained; but Iprefer to employ adjusting devices by which the rolls may be i quickly and. accurately adjusted in proper l relation to one another. Such mechanism is illustrated in Figs. 1, 3, 4, 5, and 6, in connection with which it will be explained, together with the .construction of the framing which 6, and 10.

At suitable points in the length of bed or frame A are placed two vertical frames T T,

angle, one side of which rests upon and is bolted or otherwise rigidly secured to the bed or base A. The angles of each frame T are connected by metal beams or girders U, U, and V with the corresponding angles of the companion frame, sequently being parallel with the ed or base A. Each beam or girder is formed with lugs or bosses g, bored or perforated toreceive heavy tie-bolts h, which extend from girder to girder and being furnished with nuts i on both sides of the lugs or bosses g serve-both to tie together and to rigidly brace the triangular framework consisting of the two verti- The girders U U are designed t'o carry and guide, the carriages W, in which are journaled the pairedlower rolls-L and M, L M, and R S, and the girder V supports and guides the carriages X, in which are journaled the upper rolls N. The distance between the points of support and of pressure is in general terms proportionate to the'diameter of the shaft or body operated upon. Hence the rolls should approach each other longitudinally as they are moved inward toward the common axis and should longitudinally recede from each other as they move outward from the common axis. this result, the supporting and guiding faces inward toward the axis of the work, are inclined toward such axis as they approach the mid-length of the girders, as is indicated in Figs. 1, 4, 6, and 10. -The rolls R and S being midway between the two pairs of rolls L M, L M, which are moved toward each other, require no longitudinal adjustment, and as the rolls N Nare required to maintaina position midway between theroll pairs M, and RS they require to be moved onflypne-i half as far longitudinally as do the rolls"L M; L M. Rolls N N, however, require the same extent of radial movement "toward or. from the-commonwork-axisas do rolls L M, L M, and R S. Hence the inclination of the guiding-facesof girder V mustllie twice as great movement of their carriages they shall give a girdersUU. 4

H The roll-carriages are 6mm formand eon;

carries it and which is shown in Figs. 1, 3, 4,

each'in the form of an'open equilateral tri- I said beams or irders concal frames T T, girders U U V, and bolts h.- 2

To attain of the teams or girders U U V, which all face as that of the guiding-faces'of girders .U U, so.

meet equal'to that of the roll-carriages of l I struction shown in Figs. 5, 6, 7, and 8, comprising a recessed base Y, the side walls or flanges of which fit the edges of the girders, a

-roll-carryin section Z, swiveled upon thev base Y an retaining-plates j, bolted to the flanges or walls of the base=sectipn and serv ing to retain the base upon the girder. The base is formed with an, annular groove is to receive an annularneckor collar Z, formed on the under face of the top section Z, to center the top section and prevent lateral displacement, retaining-bolts m'bein g carried through elongated openings n in the base of the upper 'eling or turning.

section and screwed into the base Y. This construction permits the upper section tobe turned to any desired angle to the base and to be there clamped against accidental swiv- The upper carriages are of course reverse Each roll-carrying section Z is formed with two divided journal boxes or bearings 0 to receive the journals of one or another of the rolls L M, LM, N N. The rolls R S requiring no longitudinal movement, but onlyradial adjustment, are'mounted in earriages A, differing from the carriages W in having longer flanges or side walls to the basesection and employing no retaining-plates 7'.

In lieu of these, elongatedbolt-holes or slots is are formed inthe Walls or flanges of the base,

through which" ass bolts 1, which screw into the glrders U Toprevent, movement of the roll-carriages A in any except a radial direction withreferen.ce' to the Work-axis, flanges or ribs m are formed upon the girders U U, between which the base of the carriage,

or the flanges thereof are seated. The radial movement of the roll-carriages A must, be

. precisely the sameas that of the carriages of rolls L M,-L M, and toe-fleet such movement I provide a wedge-bar B, which lies in a groove or channel it in the upper or inner face of irder U, one in each, said wedge-bar being olted to or otherwise connected with the base Y of one of the roll-carriages, as seen in Fig. .6, so as to move longitudinally in unison therewith. The channel n is of uniform depth, or, in other words, its bottom is parallelwiththe guiding-face of the girder 'U,

and the upper face of the wedge-bar lies horizontal or is parallel with, the un der face of the base of roll-carriage A. It will thus be evident that as carriage W moves longitudinally and carries with it the wedge-bar said .bar will elevate or move'inward the roll-carriage A at precisely the same rate or to the same extent as the carriage Wis elevated or moved inward by riding up the inclined face of the girder U; I In this way the radial adjustment of rolls R S is made precisely the same as that of rolls L M, L M. r

To move therolls L M L M simultaneously and equaliy l provide, preferably, the

mechanism shown in Figs. 1, 3, 4, and 5. This bed A andhaving the upper ends of their arms connected by rods p with the bases Y in Figs. 1 and 5. Swiveled in the bed or base A at or about its mid-length is a long rightand-left nut or sleeve E, the end portions only of which need be tapped or threaded. This nut or sleeve carries a worm-wheel F and is connected by jointed rods G screwing into its opposite ends with the yokes C D, so thatby rotating said sleeve or nut the yokes can be caused to swing toward or from each other, and thus to approach or recede theroll-carriages WW. A worm or screw H, carried by a shaft 1, suitably swiveled in base or bed A, meshes with and servesto rotate worm-wheel Fandnut or sleeve E to cause the stated movement of the yokes and roll-carriages. Shaftl carries a hand-wheel J, by which to rotate it, and it will be underturning said wheel the roll pairs L M L M will be caused to approach the roll pair R S equally, and the three roll pairs will be moved radially inward toward the work-axis, each to precisely the same extent. able the attendant to determine readily the a scale q may be marked upon one of the girders U, to be read in connection with the forward end of one of the roll-carriage bases Y, the scale indicating the radial movement larly operated, ii desired, but I prefer to provide for each of these a screw K, screwing into the base-block oi the carriage swiveled. in the girder V and furnished with a hand wheel L as seen in Fig. 4. Under this an to the proper point, as ascertained by readl ing a scale on the girder, or, as is preferred, a

plece oishaiitmg or the diameter ror which the lower roll pairs are set or adjusted may be laid upon said lower rolls and the screws K then turned until the upper rolls N take their proper bearing upon the shaft, which will occur when the rolls reach a position mid way between the lower roll pairs.

1 have above suggested that the roll-carriages may be adjusted separately and without the special appliances described. I construction suitable to this mode of adjustment Figs. 11, 12, and 13. In these figures I have shown the same general arrangement of triangular frames T T and girders U U V, the girders being in this case longitudinally chan neled. The roll-carriagesW are each formed with a longitudinal guiding web or rib a to i enter and fit neatly in the channel b of the girder on which it is mounted, and this rib is length or radial to the oommonaxis about l which the rolls are grouped. The, slot 0 is to stood from the foregoing description that by.

extent of longitudinal and radial adjustment,

or aflording aready basis for estimating the same. The upper roll-carriages can be simi ICO rangement the upper carriages may be run of the carriages or rolls L M L-M, as best seen and proportionately simple is illustrated in provided with a slot 0 at right angles to its 'justment of the roll-carriages.

receive a bolt (P, which passes through slots 1 c in the side walls of the channeled girder, as j seen in Figs. 11 and 12, the slots and c permitting both radial and longitudinal adl When the desired adjustment is attained, the nut of bolt (1 is tightened, thereby causing the walls or" the channel 6 to bind or. clasp firmly the rib or web a of the carriage and to hold the drical bodies, the combination of two pairs 5 carriage against displacement. To give the l proper radial adjustment to the rollcarriages W and insure proper relation of the roller-faces to the shafting or other work, I l provide heavy tap bolts f which screw through tapped openings in the outer wall of the girder and bear against the rear or outer l edge of web or rib (L as seen in Fig. 11. Each tap bolt is provided with a jam-nut g to pre vent its Working loose. As seen in Fig. 11, the web or rib a of each carriage VV is made i of length suilicient to permit adequate longitudinal adjustment of the carriage without passing out of the range of the bolts f While i this construction is cheaper and simpler than 4' that first described, it is less convenient to set or adjust and does not permit of equally-fine I adjustment. It will of course be understood 1 that the carriages W may be made in two I parts, oneswiveled on the other after the 2 manner of the carriages W, in which case practically the same adjustments would be possible, though requiring greater careand more time to make. l I have shown and described one complete i set of rolls capable of performing the straightl ening operation. If it be desired to repeat this operation one or more times, the roll. sets'may e duplicated or multiplied to any i extent desired. As the mode of construc- 1 l tion, arrangement, and operation would in such case remain unchanged, it is deemed unnecessary to further illustrate such increase in the number of rolls. 1

Having thus described my invention, what I claim is 1. In a machine for straightening cylindrical bodies, the combination of two pairs of rolls and an intermediate roll, the paired rolls and single roll being arranged with '1 their axes oblique to each other and to the l common axis about which they are grouped, and at varying points in the length of said axis; and means for imparting rotation to at least two of said rolls, j

2. In a machine for straightening cylinj of supporting-rolls, an intermediate roll, and means for imparting rotation to at least two I of said rolls, the several rolls being-arranged i about a common axis and having their axes oblique to said common axis and to each other. l 3. In a machine for straightening cylindrical bodies, the combination of two pairs. of rolls and a roll intermediate the proximate ends of the two roll pairs, the several rolls being grouped about a common axis and having their axes oblique thereto and to each other, and

longitudinally toward and from the intermediate roll.

4. In a machine for straightening cylindrical bodies the combination of two pairs of rolls, and a roll intermediate the proximate ends of the two roll pairs, the several rolls being grouped about and movable toward and from a common axis, and having their axes oblique to said common axis and to eacl: other..

5. In a machine for straightening cylindrical bodies, the combination of two pairs of rolls, and a roll interposed between the proximate ends of the two roll pairs, the sev" eral rolls being grouped about and movable toward and from a common axis, and having their axis oblique to said axis and to each other, and the paired rolls being longituthe paired rolls being movable dinally movable toward and from the inter mediate roll.

6. In a machine for straightening cylindrical bodies, the combination of a suitable framework having guideways converging toward a common ax1s;roll-carrying carriages mounted and longitudinally movable upon said guideways; an intermediate rolldrical bodies, the combination of a suitable' frame having three or more sets of g'uideways converging toward a common. axis; three roll pairs mounted in carriages arranged end to end upon the lower sets of guideways, the intermediate pair being fixed against longitudinal movement, and the outer pairs being longitudinally movable toward and from the intermediate pair; and independent rollcarrying carriages mounted upon the upper guideways, in alternation with the lower 'carriages and rolls, said independent carriages.

and rolls being longitudinally movable toward and from each other.

8. In c'ombination with verging toward a common axis,-and with roll-carrying carriages mounted and longitudinally adjustable thereon termediate of said longitudinally-movable carriages and movable toward and from said.

common axis; girder vV having guideways girders U, U, con

roll carrying carriages mounted upon the guideways ineach other; yokes C,.

and R, S, intermedia'terollN gearingfor imparting rotationto said rolls L, M and N; and telescopic shaft connections between the rolls and gearing, whereby said rolls are adapted to be longitudinally adjusted withrollcarriages mounted at the mid -length of the girders U, U, provided'with rolls, and movable radially to said comnionaxis; yokes J, D, connected with the longitudinallymovable carriages ,means for causing said yokes to approach and recede from each other; and wedges carried by two of the longitudinally-movable carriages and passin between the radially-movable carriages and the girders on which they are supported, whereby the radially-movable carriages are caused to move simultaneously with the longitudinally-moving carriages. r

11. In combination with girders or supportshaving converging guideways; roll-carriages mounted and longitudinally movable upon said guideways; roll-carriages mounted upon the guideways intermediate of the longitudinally-movable carriages and movable radially toward and from the common axis toward which the guideways converge; and means for simultaneously moving the several carriages toward and from said common ax1s.

12. In a machine for straightening cylindrical bodies ,the combination of a frame provided with guideways convergent towa'rda common axis roll-carrying carriages mounted on said guideways and movable longitudinally thereon to cause their endwise and axial approach; interposed roll-carrying carriages movable radially toward and from said common axis; and means for thus adjusting the roll-carriages, said carriages hav ing their roll-receiving bearings swiveled upon their bases, substantially as described, whereby the angle of roll-axes may be varied to accord with the approach or separation of drical bodies, a-series of rolls grouped about the rolls.

13. In combination with a suitable frame, comprising girders U, U, and V, having convergent guideways; roll-carrying carriages mounted and longitudinally movable on said guideways; yokes C, D connected with some of said carriages; a two-partrod G, having its proximate ends reversel threaded; a nut E connecting the rod-sections; and means, substantially such as de scribed, for rotating said nut.

14. In combination with a-main frame, and roll-carrying carriages mounted and longie tudinally movable thereon toward and from D, connected with said carriages; a divided rod G, having its sections connected with the respective yokes a nut E connecting ,the rod-sections; a

worm-wheel F carried by said nut; a worm H meshing with said worm-wheel; a shaft 1 carrying said worm; and means for turning said shaft.

15. In combination with girders U, U, hav- H ing guideways convergent toward a common axis; a girder V having guideways also con-' vergent toward said axis, but at twice the angle of those of the girders U, U; roll-car rying carriages mounted on the several guide ways and longitudinally adjustable thereon;

and screws swiveled in the girder V and threaded in the carriages thereon, for moving said carriages longitudinally upon their guideways.

16. In a machine for straightening cylin drical bodies, a main frame comprising a base two triangular frames mounted thereon; girders extending from one to the other of said frames, connecting the same, and provided with convergent guideways; and tierods connecting the girders at points intermediate of the triangular frames, substantially as shown and described.

17. In a machine for straightening cylindrical bodies, the combination of three pairs of rolls; an intermediate opposing roll or rolls between the first and second pairs of rolls; an intermediate opposing roll or rolls between the second and third pairs of rolls, all of said' rolls being grouped about and movable toward and from a common axis, and having their axes oblique to one another and to the common axis, the rolls being longis tudinally adjustable; and means for impart-' ing rotary motion to at least two of the rolls.

18. In a machine for straightening cylin d'ricu bodies, a series of rolls grouped about and radially adjustable toward and from a common axis and also longitudinally adjust able, said rolls being beveled at their forward or receiving ends to facilitate entrance of a cylindrical body between them and having their axes oblique to one another and to the I common axis; and means for rotating at least two of said rolls.

19; Ina machine for, straightening cylina common axis and having their axes oblique to one another and to saidcommonaxis; and means for imparting rotation to at least-two Witnesses: I A. F. GETTY, Rom. SHRIVER.

WALTER "J.MUNGAST1R. 1

I have signed i 

